Fabric treating thermoplastic resin-rosin composition



Patented July 15, 1952 603,61z FABRIC TREATlNG THERMOPLASTIC assm nosm COMPOSITION,

Ren Jean: Benjamin Elissabide,

Basses-Pyrenees, France I No Drawing.

The present invention relates to a fabric treating solid composition and method for the treatment of fabrics.

[More particularly, the present invention {relates to a shaped mass, as a wafer or stick, for

treating certain portions of a fabric adjacent a crease therein and adapted to facilitate the production of a more permanent crease and a method' for applying a relatively permanent crease toa fabric. 1

Various expedients have been suggested previously for rendering the creases and folds customarily applied to fabrics more permanent; for example, it has been suggested that the entire fabric may be impregnated in order to stiffen or. size the same.

plasticso that upon the application thereto of a" hot-iron permanent folds-may be produced. All of these expedients possess a disadvantage'in that a special treatment step must 'beemployed,

which results in a visible change throughout the thickness of the fabric and in its properties. I

Various types of marking crayons which include' large proportions of pigments, together with a-relativel'y minor proportion of resin and adapted to make a permanent mark upo'na fabric,'are also known. In general, marking crayons of this type leave a mark which is intended to; be

permanent and include solvents and softeners so that the mark desirably 'impregnates the fabric.

The present-invention has for an object the provision' of a novel treatment :means which is adapted to be applied preferably to the rear surface-immediately opposed to a crease or fold and when so appliedrenders'more' permanent the aforesaid crease} or fold' without producing any mark upon the-fabric which is visible from the outrlsidethereofr I A second general] obj posed primarily resin, capable of softening at temperatures-nor? mally used'in the pressing of garments, combined with-a "minorproportion of a---binder materialhalving a more or' less pasty characteristic and capable offorming 'together with the; resin a shaped, stable, solid mass;

A-third generalobject-ofthe present inven-y tion is to provide a novel method for setting a crease which includes the treatment of an extremely small portion of a fabric garment im-' mediately opposed to theoute'rsurface thereof It has also been suggested that" certain portions of a garment may bejpro duced'of special materials which, are thermoj-jj ct of the present inventi'on 'zis-ito provide-a novel wafer or stick "corn of two essential. materials;' i. e1, a major proportion of powdered"thermoplastic amount of solvent in the final mass tends to cause Application December 1947, 5 Serial No. 794,421,

5 Claims. (01. 260423)- containingfthe crease,'with a moplastic resin in the fabric. I

Other objects and dvantages'of the inventionwill become apparent from the subsequent jdescriptio'n and claims.

In general, the present invention is practiced by providing a thermoplasticresin as, for example, vinyl chloride, copolymers of vinyl chloride and vinyl acetate, butadien'e polymers, natural rubber, chlorinated rubber, and other thermo;

plastic resins well known in the art. The resin is employed as a powder, preferablyfine. This produced by chilling theresin to a temperature sufiiciently' low to cause its embrittlement as; for example, vinyl chloride polymers should be chilled to between about -10 C. to +20 q.

The resin may then be treated in a conven'-' tional hammer mill or ball mill being slowly ground to the consistencyof fine talc. ,Care should be taken during this partof the process to avoid raising the temperature or softenin the resin. 'The'reafterfthe product may be screened to separate any larger particles.

Ihe powdered material iscombined'with the binder by triturating the samein a conventional mixer as, for example, a Banbury type mixer'may be utilized. Preferably, the binder should be free from any substantial amount of wateror vola".-'

tile solvent since it has been foundv preferable to'avoid any solvent in the final mass. It has been found that the presence of any substantial the trace produced on the cloth tostrike through or impregnate the'cloth and this phenomena should be avoided. As an example of satisfajc-l tory binder, common soap has been used and particularly a" soap containing a certain propor-- -tion of resin. A soap suitable for use in the present process is one containing approximately 63% of fatty acid residues and of rosin. Preferably, the rosin should be from one-thirdto onehalf of the saponiflable material used for'forming the soap. Y

The resin should preferably constitute a major proportion of the finished solid composition. In

other words, more than of resin in powdered form should be used and less than 50% of binder. Although a particularly satisfactory binder is soap of'the character just described other binding materials may bev used, for example, paraffin,

mixtures of beeswax and soap and mixtures" of stearine. Preferablyythe binder should contain a substantial proportion of rosin, i. e., from 10%- to 20 of the solid composition. The incorpor'a-* V stick orwafer capa ble of leaving a fine line anda powdered therconventional cleaningoperations, The following Pey'vmyricmoadea mini -a;

-Soap binder composed of the following:

' ,maintainedsufiicientlylow so that-1no1fusion ofthe resin powder takes place and so the powder will be homogeneously distributed throughout the binding substance. After the homogeneous, stiff, pasty mass has been producedfro'mlthead mixture of binder and resin, the resultantmas's may be molded into a block and the blochmade into blanks by utilizing the conventional=wirecutters ordinarily used in the soap industry.

The blanks may be molded into a suitable shape by utilizing conventional soap molds. The shapes preferably used include a thin wafer havingya sharp periphery or an elongated stick provided 720 with; a -pointed end. I Qthersuitable; shapes are triangular or other. geometrical blocks or any other shape suitable fpradepositing the material in the form of-a relatively thin line-having a width of-approximatelyone millimeter.

The solid composition hereinbefore described can be, utilized for producing a more permanent crease on substantially any of the conventionalfabrics, providing these."fabrics, where they in. cludeflanyi substantial proportion of artificial fibers,,have,a higher fusing point than the. thei mopl astic resin forming a part offthe. composi-. tionof the presentinventionf In igeneral, the various. thermoplastic compositions should have a rnsing point intheneighborhood'of 9'0"Cl00" 35 C. Asan example, inutilizing the composition of the present invention upon a pair of trousers a cfease'fis first produced Within thetrouser legs by. the conventional-pressing method.' Thereafter, 'thetrousers areturned'inside. out and a deposit of, composition is applied to vjthe inside of the crease in the formjfof'a' line of material of approximately. one millimeter in width. ,"Thereafterj the trousers are reversed and pressed once again in, suchr'nann'e'r that the previous crease line is carefully.,.'followed.. The second "pressing. operationfis performed with a hot i'r'on heated to such temperature that the thermoplastic portion;

.ofj-thejlcrease setting composition is softened.

This produces a localized adherenceland/orbend ingot the textile fibres adjacentth'e in'ner 'surface of the crease mark. Upon cooling; it will be found that a. crease so "producedjis far more permanent than an ordinary crease 'and'survives to asubstantial degre'e after pro'longedwear and examples serve; to illustrate the composition 'of the present inve t but are not intended to;

" #:Eitainplel V Rosin save 70 thoroughly mixed together and thereafterjmolded into vblcckspf a suitable size, I?he blocks;=are-in' turnout as by a soap cutting wire;=to produce; blanks.- ,;The blankswere vmolded ini thelsamemanner asgsoap into elongated sticks or any-other chloride-powder in a Banbury mixer.

, sistingof mixtures -1of common shape suitable for producing a fine line deposit upon a fabric. When coated upon the inside of a woolen or cotton garment directly opposite a crease therein and subsequently treated with a hot iron, a relatively permanent crease was produced.

I. p 1. .1 f-i Parts Polyvinyl chloride in the form of a powder 55 Parafiin Rosin 15 The paraffin and rosin were thoroughly ad- 'mixed as by melting the two ingredients together,

thereafter cooled, and mixed with the vinyl The resulting; composition was formed into wafers or sticks as in Example 1 and when utilized upon a garment also gave satisfactory results.

poses was alsoproduced from the aboveingredients'ashereinbeto-re described. .1. a In the; above examples; all ,of the proportions indicatedareby-weighta f. 0 j It will be obviousto thoseskilled in the art that various changes may 'be made without departing from thespirit-of the invention-and therefore-the invention; is; not limited: to what described thespeciiica-tionbut only as indicated inithe 'apipendedclaims; '5-; 1

- Whatisclaimedis: g .1; I

,1. A shaped stable mass forproduclng a-=-su-b-i-' stantially' linear-deposit on the surface of fabric without substantialpenetration thereof so as to permitdeposition of;a surface layer of fusible r s-in on e insid iasa-rmentrrease.for u sequent hot .=i: on 7 setting th'ereoii without, visibly; ik r ree 1-; toat e outs de; of: said arment consisting of 1 a mechanical; mixture of 3a major *1 proportion of powdered thermoplasticresin'freei qm olvent. amlpl st ciz r' and havi a softenn i n m-tfzo a proximate 0430.0 0. and I asa bindepfonsaid powdered resin a minortpropor-v tion. of :a-iseml-sol-idrselected from the class con-.7. soap and resin. mixtures. o1: parafiin and, rosin; mixtures? of stearinm-and rosin, mixedrosin fatty' acid soaps,

andmixtures of-zrosin and mixedrosin-fatty acid soaps; said semi-solid containingfrom 10-20%; by weight of the mass of ro .2*.-.'I;'he-massof;;clai1 qthejthimnplasticfresinisa-vinyl resin; v 4 43-. The: mass; i'flf'iclaim "1 wherein the-thermos plastic resin is 'a vinyl resinand-the binder is a mixture (if-common soapand-rosin 1 4. The mass of claiml wherein the thermoplastic resin is a, vinyl resin and the binder is a mixed rosin-fatty acid soap.

5. The mass of claim 1 wherein the thermoplastic resin is a. vinyl resin and the binder is a mixture of mixed rosi fatty acid soap and rosin.

RENE. JEAN BENJAMIN REFERENCES CITED The following references are of record in the 10 file of this patent:

UNITED STATES PATENTS- Number Name Date 1,688,117 Davis Oct. 16, 1928 15 7 Number Number Name Date Grofi July 17, 1934 Gerhart Aug. 25, 1936 Reed et a1. Mar. 30, 1937 Woifi Oct. 6, 1942 Gessler et a1 Apr. 27, 1943 Sturm July 10, 1945 Ballard Ju1y-2, 1946 South'ard July 16, 1946 Meyer Sept. 14,1948 FOREIGN PATENTS Country Date Great Britain, Dec. 4, 1934 l 

1. A SHAPED STABLE MASS FOR PRODUCING A SUBSTANTIALLY LINEAR DEPOSIT ON THE SURFACE OF FABRIC WITHOUT SUBSTANTIAL PENETRATION THEREOF SO AS TO PERMIT DEPOSITION OF A SURFACE LAYER OF FUSIBLE RESIN ON THE INSIDE OF A GARMENT CREASE FOR SUBSEQUENT HOT IRON SETTING THEREOF WITH VISIBLY STRIKING THROUGH TO THE OUTSIDE OF SAID GARMENT CONSISTING OF A MECHANICAL MIXTURE OF A MAJOR PROPORTION OF POWDERED THERMOPLASTIC RESIN FREE FROM SOLVENT AND PLASTICIZER AND HAVING AN SOFTENING POINT OF APPROXIMATELY 90-100* C. AND AS A BINDER FOR SAID POWDERED RESIN A MINOR PROPORTION OF A SEMI-SOLID SELECTED FROM THE CLASS CONSISTING OF MIXTURES OF COMMON SOAP AND ROSIN, MIXTURES OF PARAFFIN AND ROSIN, MIXTURES OF STEARINE AND ROSIN MIXED ROSIN-FATTY ACID SOAPS AND MIXTURES OF ROSIN AND MIXED ROSIN-FATTY ACID SOAPS, AND SEMI-SOLID CONTAINING FROM 10-20% BY WEIGHT OF THE MASS ROSIN. 